样本均值分布式一个特殊的总体分布。()

未分类题It can be inferred from the first paragraph thatA．the 1957 influenza infected 250,000 people in AmericaB．Asia was the cradle of the 1957 influenza pandemic in America.C．Maurice Hilleman went to Asia to Collect the sample of the influenzaD．it was quite time-consuming to study the genetic structure of the influenza

判断题原始分数和Z分数之间的转换过程实际上就是对分布轴的一种重新标定。()

未分类题The word 'footnote'(Line 1, Paragraph 1)means that the influenza in 1957A．was less important in American medical history.B．imposed little influence on American population.C．was less serious in terms of death toll.D．got less attention of American medical experts.

判断题文法的任意两个符号对之间都存在简单优先关系。()

未分类题Why have venture capitalists found it difficult to invest in wind power?A．Investment in the wind power market is highly risky.B．Development of wind power calls for new technologies.C．Wind power industry did not develop as fast as expected.D．Investment in wind power may not be so cost effective.

判断题叠音词色彩鲜明，富有美感，声情并茂，有它独特的修辞效果，在写诗词歌赋时，犹为古今作者所喜用。()

未分类题According to Mr. Greco, SWWPs new tribuneA．has already dominated the 'off-grid' market.B．will fail in the grid-connected market.C．is inclusive, economical and easy to operate.D．will become a more profitable product than others.

单项选择题我国在制度中正式将“待业救济金”改为“失业保险金”是在()

未分类题According to some experts, Global Fund delays the disbursements becauseA．there remains a huge gap between what is promised and what is spent.B．the $8 billion can't be released until it will be spent effectively.C．the situation of health-care in poor countries presents a tough barrier.D．the physical condition of local people imposes a bottleneck to aid.

未分类题By saying 'the world may end up making a go of elimination this time'(Lines 4-5, Paragraph 6), the author implies that the world mayA．manage to eradicate polio.B．fail to achieve the eradication of polio.C．give up the goal of eradication of polio.D．begin to eliminate polio.

判断题词的本义在一组词义中只有一个，而引申义的数量可以很多。()

未分类题Which of the following is true according to the second paragraph?A．It is the audience problem that leads to feature creep.B．What matters to designers and marketers is not good for consumers.C．Feature creep brings blessings to the people in marketing and sales.D．The engineers will not pay attention to the quality of the products.

判断题单注本是与原书别行的注本，不包括单疏本。()

未分类题Companies find it difficult to avoid feature creep because consumersA．find complex gadgets easy to manage.B．are attracted by gadgets with more features.C．do not like the gadgets featured by simplicity.D．know the virtues of complexity very well.

未分类题Muslims in northern Nigeria is cited as an example to show thatA．eradication of polio has been hampered by the conspiracy of Muslims.B．eradication of polio met many obstacles there.C．vaccination program was harmful to the children there.D．vaccination program strengthened and spread virus.